$ git clone -n https://src.fedoraproject.org/rpms/golang-github-kyokomi-emoji.git /var/lib/mock/f45-build-12135-439/root/chroot_tmpdir/scmroot/golang-github-kyokomi-emoji
Cloning into '/var/lib/mock/f45-build-12135-439/root/chroot_tmpdir/scmroot/golang-github-kyokomi-emoji'...
$ git fetch origin 8af31dba37d8ad522a9cd8a0cead85db31e6c79c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-kyokomi-emoji
 * [new ref]         8af31dba37d8ad522a9cd8a0cead85db31e6c79c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8af31db Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild