$ git clone -n https://src.fedoraproject.org/rpms/gtk-murrine-engine.git /var/lib/mock/f42-build-3273545-41312/root/chroot_tmpdir/scmroot/gtk-murrine-engine
Cloning into '/var/lib/mock/f42-build-3273545-41312/root/chroot_tmpdir/scmroot/gtk-murrine-engine'...
$ git fetch origin 660c5bca8400691442120942c44a17f4257ee435:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtk-murrine-engine
 * [new ref]         660c5bca8400691442120942c44a17f4257ee435 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 660c5bc Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild