$ git clone -n https://src.fedoraproject.org/rpms/icewm.git /var/lib/mock/f45-build-14004-456/root/chroot_tmpdir/scmroot/icewm
Cloning into '/var/lib/mock/f45-build-14004-456/root/chroot_tmpdir/scmroot/icewm'...
$ git fetch origin a07b3619f688b1f381653ba789111e775b5519be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/icewm
 * [new ref]         a07b3619f688b1f381653ba789111e775b5519be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a07b361 Fix icewm: FTBFS in Fedora rawhide/f45 rhbz#2504134