$ git clone -n https://src.fedoraproject.org/rpms/tomcat-taglibs-parent.git /var/lib/mock/f40-build-2646605-66638/root/chroot_tmpdir/scmroot/tomcat-taglibs-parent
Cloning into '/var/lib/mock/f40-build-2646605-66638/root/chroot_tmpdir/scmroot/tomcat-taglibs-parent'...
$ git fetch origin 3976dc44a61ff210718189df501ded8d31704605:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tomcat-taglibs-parent
 * [new ref]         3976dc44a61ff210718189df501ded8d31704605 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3976dc4 Rebuilt for java-21-openjdk as system jdk