$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-tomb-2.git /var/lib/mock/f40-build-2002777-44758/root/chroot_tmpdir/scmroot/golang-gopkg-tomb-2
Cloning into '/var/lib/mock/f40-build-2002777-44758/root/chroot_tmpdir/scmroot/golang-gopkg-tomb-2'...
$ git fetch origin 05af6472b546682fc3551f58dbb0f5831ad51ef0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-tomb-2
 * [new ref]         05af6472b546682fc3551f58dbb0f5831ad51ef0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05af647 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild