$ git clone -n https://src.fedoraproject.org/rpms/kf5-kmailtransport.git /var/lib/mock/f40-build-2349269-60159/root/chroot_tmpdir/scmroot/kf5-kmailtransport
Cloning into '/var/lib/mock/f40-build-2349269-60159/root/chroot_tmpdir/scmroot/kf5-kmailtransport'...
$ git fetch origin bc4a8e09490c356e87f33f920142aadda615bf79:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kmailtransport
 * [new ref]         bc4a8e09490c356e87f33f920142aadda615bf79 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc4a8e0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild