$ git clone -n https://src.fedoraproject.org/rpms/libdasm.git /var/lib/mock/f45-build-15989-481/root/chroot_tmpdir/scmroot/libdasm
Cloning into '/var/lib/mock/f45-build-15989-481/root/chroot_tmpdir/scmroot/libdasm'...
$ git fetch origin 3089e880ac42019afdb094844ffd1da242b61fd6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdasm
 * [new ref]         3089e880ac42019afdb094844ffd1da242b61fd6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3089e88 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild