$ git clone -n https://src.fedoraproject.org/rpms/libcloudproviders.git /var/lib/mock/f45-build-16003-481/root/chroot_tmpdir/scmroot/libcloudproviders
Cloning into '/var/lib/mock/f45-build-16003-481/root/chroot_tmpdir/scmroot/libcloudproviders'...
$ git fetch origin 691fa7f830bd5a461da62cea2ae747514d19f586:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcloudproviders
 * [new ref]         691fa7f830bd5a461da62cea2ae747514d19f586 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 691fa7f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild