$ git clone -n https://git.cclinux.org/stage/rpms/xmlrpc-c.git /var/lib/mock/dist-circle8_10-updates-build-119099-83258/root/chroot_tmpdir/scmroot/xmlrpc-c
Cloning into '/var/lib/mock/dist-circle8_10-updates-build-119099-83258/root/chroot_tmpdir/scmroot/xmlrpc-c'...
$ git fetch origin 42f17c8664c4dbe4cbcdd9dc4888241c1a22a965:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/xmlrpc-c
 * [new ref]         42f17c8664c4dbe4cbcdd9dc4888241c1a22a965 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42f17c8 import xmlrpc-c-1.51.0-10.el8_10