$ git clone -n https://src.fedoraproject.org/rpms/libdecor.git /var/lib/mock/f45-build-16037-481/root/chroot_tmpdir/scmroot/libdecor
Cloning into '/var/lib/mock/f45-build-16037-481/root/chroot_tmpdir/scmroot/libdecor'...
$ git fetch origin 5c486f1100e351efd005ecfd45d2f7dc7996ee05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdecor
 * [new ref]         5c486f1100e351efd005ecfd45d2f7dc7996ee05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c486f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild