$ git clone -n https://src.fedoraproject.org/rpms/ksirk.git /var/lib/mock/f39-build-1955790-43239/root/chroot_tmpdir/scmroot/ksirk
Cloning into '/var/lib/mock/f39-build-1955790-43239/root/chroot_tmpdir/scmroot/ksirk'...
$ git fetch origin 8a726d9dc58845aea3d9fcfe6f6a5dc0ca9c82c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ksirk
 * [new ref]         8a726d9dc58845aea3d9fcfe6f6a5dc0ca9c82c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a726d9 Update to 23.08.4