$ git clone -n https://src.fedoraproject.org/rpms/mawk.git /var/lib/mock/f39-build-1462078-33300/root/chroot_tmpdir/scmroot/mawk
Cloning into '/var/lib/mock/f39-build-1462078-33300/root/chroot_tmpdir/scmroot/mawk'...
$ git fetch origin 87b45c7555f5de0794e0fdab2368cc96edd40b31:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mawk
 * [new ref]         87b45c7555f5de0794e0fdab2368cc96edd40b31 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87b45c7 upgrade to 1.3.4-20230730 (RHBZ#2228631)