$ git clone -n https://src.fedoraproject.org/rpms/golang-github-xaionaro-spinlock.git /var/lib/mock/f45-build-12592-442/root/chroot_tmpdir/scmroot/golang-github-xaionaro-spinlock
Cloning into '/var/lib/mock/f45-build-12592-442/root/chroot_tmpdir/scmroot/golang-github-xaionaro-spinlock'...
$ git fetch origin 1a82757088c265156cb8eda362a98c51657b9c8f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-xaionaro-spinlock
 * [new ref]         1a82757088c265156cb8eda362a98c51657b9c8f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a82757 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild